I am using K-Meleon as my secondary browser for some features that I can not find elsewhere.

I used to login to 3 diffent Google accounts on K-Meleon and the browser always opened a small table with the possibility to pick the login data I needed (the table had title "Select a user name to be entered on this form".

Anyhow now I have the form auto filled (auto populated) with one of my login data and the table does not show up.

Where I can remove the auto-filled data, so there is again the possibility to choose the login data according to my current preference ?